Boiler.



II. R. BAILEY 6a J Ef. MOIARREN.

Boum.

i APPLICATION FILED AIIGL 14, 1908. Y I

937,572. Patented Oct. 19,1909.`

2 SHEETS-SHEET 1.

^ lllllllllz H. R. BAILEY & J.`E. MOFARREN.

' -BOILFRl APPLIoATIoN FILED AUG.14, 190B.

Patented Oct. 19,1909.

2 SHEETS-SHEET 2.

UNITED sTATEs PATENT oEErcE.

HARRY R. BAILEY AND JACOB E. MCFARREN, 4OF MASSILLON, OHIO.

BOILER.

Application led August 14, 1908.

Speccaton of Letters Patent.

To all 'whom 'it may concern.'

Be it known that we, HARRY R. BAILEY and JACOB E. MCFARREN, citizens of the United States, residing at Massillon, in the `county of Stark and State of Ohio, have in vented certain new and useful Improvements in Boilers, of which the following is a specification, reference being had therein to the accompanying drawing.

Our invention refers to improvements in boilers for the economical generation of steam for power or heating purposes, and is designed to provide a construction adapted for simplicity and economy of manufacture and installation, of few parts so arranged as to provide for easy inspection of the interior construction, removal, renewal or repair of the parts liable to wear orburning out, and generally serviceable for the purposes in view.

The boiler is particularly adapted for domestic use in supplying a circulation of heated water or steam for the heating of dwellings or other buildings, and is constructed and adapted to operate in the manner hereinafter described.

Referring to the drawings: Figure 1 is a longitudinal sectional view through a boiler setting showing our improved construction in position. Fig. 2 is a central longitudinal sectional view through the boiler. Fig. 3 is a cross section on the line III. III. of Fig. 1. Fig. 4 is an enlarged longitudinal sectional view, partly broken away, of one of the lower water tubes. Fig. 5 is a front end view of one of said tubes.

Generally stated, the boiler as a whole consists of an upper drum 2 of well known construction provided'with flues 3 and the usual smoke box and stack; a pair of headers 4 and 5 front and back connected by a series of water tubes 6; a front vertically arranged circulation leg 7, and a rear circulation leg 8 formed in S shape extending across the path of the gases of combustion as shown, each of said legs being connected with the upper drum 2 and lower headers 4 and 5 respectively, to provide for circulation of the water.

The headers 4 and 5 are preferably of boX shape, rectangular in construction having vertical side walls 9, 9, and horizontal top and bottom walls 10 and 11 respectively, and inwardly depending end walls 12, as clearly shown. The outer ends of heads 4 and 5 are also preferably provided with flanges 13 to which is bolted the cover plate 14, preferably With an intervening gasket or packing strips 15 of copper or other suitable material.

The water tubes 6 are preferably in the form shown in Figs. 4 and 5, reinforced eX- ternally at each end as indicated at 16, 17, by annular tapering enlargements of coniform construction, both tapering in the same direction and provided with the securing threads 18, 19, for insertion in correspond ingly threaded sockets in the walls 12 of the front and back headers 4 and 5 respectively.

For the purpose of easy insertion through the wall 12 or front header 4 and simultaneous insertion by screwing into the walls of each header, the largest diameter of the front threads 17 of tube 6 is slightly less than the smallest diameter of the threaded socket of wall 12 of the front header 4 whereby the tube may be inserted through the front socket until the front threads of both series 17 and 16 engage the threads of their respective sockets. The tube is then secured into both sockets by the same operation, and when tightly inserted, its ends may be headed over the inner faces of walls 125er otherwise secured in any well known manner.

For the purpose of facilitating the turning of the tube by a suitable tool its front endv may be provided with projecting lugs or ears 20 as will be readily understood.

By this construction it will be seen that whenever one or more of the tubes 6 burn out, it may be readily removed and another tube inserted by merely removing the cover plates 14 without disturbance of the other tubes or any of the other portions of the installation. An additional advantage of this construction is that the tubes 6 may be easily exposed for cleaning of scale, etc., by the insertion of a straight toolupon removal of heads 14, the construction avoiding all angles or bends and reducing the work of such operation to a minimum.

The entire equipment is mounted within front wall 21, back wall 22V and side walls 23, 23, and as shown the flanges 13 are located flush with or adjacent to the outer face of the front and back walls, the cover plates 14 thus extending beyond said faces,

so that their removal will in no way involve any disturbance of the setting.

The circulation legs 7 and 8 are secured to the shell of drum 2 by flanges 24 fitting the curvature, and by flanges 25 fitting the flat face of upper walls 10 respectively, be-

ing `secured by rivets or bolts. By this means either of said legs, which are preferably made of cast metal, may be readily removed or inserted without interfering with any other portion of the structure.

Vl/Vhen thus constructed and mounted in place, with the usual furnace chamber 26 at the front, the gases of combustion willV circulate around rear leg 8 extending across the'path of the gases, through flues 3. and outwardly through the smoke box and stack, as indicated by the arrows.

The advantage of the invention will be readily appreciated by all those familiar with the construction and use of boilers.

The cost of manufacture is low, the parts are few, complete circulation of the water and ample exposure to the fire and circulating gases is provided due to the construction and arrangement of the headers, tubes, and legs 7 and 8, the form of the latter providing for greatly additional area by reason of its shape, and when used for domestic heating at a comparatively low degree of temperature, Vthe cost of fuel is reduced to a minimum.

Various changes Vormodifications may be made in the construction or arrangement of the parts or in different details -by the skilled mechanic, but all such changes are to be considered as within the scope of the following claims.V v

What we claim is 1. In a boiler', the combination with the supporting outer structure embodying a furnace chamber and vertical front and back walls respectively, of an upper drum provided with circulation flues, lower independent water headers at front and back respecback respectively, substantially as setrforth. f

2. In a boiler, the combination of an up# per drum provided with circulation lflues, supporting walls therefor with intervening gas circulation space, lower independent rectangular water headers at front and back having flanges flush with vthe outer walls, removable cover plates secured to said flanges,

Water tubes screwed into the inner walls of and connecting said headers, water circulation legs connecting the headers with theV lower portion of the upper drum at front and back, and means for Vproducing combus` tion below the front header and circulation of the gases upwardly around the headers,

tubes, water legs and through theY circula-V tion lues of the drum, substantially as set forth.

In testimony whereof we affix our signatures in presence of two witnesses.

HARRY RBAILEY.

JACOB E. MQFARREN..

lVitnesses Y BERTHA Lrrs, l GRACE M. McIsAAc. 

